fix testKeyguardShowHideOverPip on TV device.

BUG: 140827522
Change-Id: Ia0541d960064efd28842c23f8760945286eee335
diff --git a/tests/framework/base/windowmanager/src/android/server/wm/lifecycle/ActivityLifecycleKeyguardTests.java b/tests/framework/base/windowmanager/src/android/server/wm/lifecycle/ActivityLifecycleKeyguardTests.java
index 5ea5526..2dff252 100644
--- a/tests/framework/base/windowmanager/src/android/server/wm/lifecycle/ActivityLifecycleKeyguardTests.java
+++ b/tests/framework/base/windowmanager/src/android/server/wm/lifecycle/ActivityLifecycleKeyguardTests.java
@@ -126,6 +126,7 @@
     @Test
     @FlakyTest(bugId = 131005232)
     public void testKeyguardShowHideOverPip() throws Exception {
+        assumeTrue(supportsSecureLock());
         if (!supportsPip()) {
             // Skipping test: no Picture-In-Picture support
             return;